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Number of sequences of n 2's and 3's with curling number 2, which have the form XY^2 with Y = 2, and which are robust.
+10
2
0, 0, 1, 2, 4, 7, 16, 30, 63, 122, 251, 495, 1003, 1990, 4012, 7992, 16043, 32024, 64173, 128226, 256692, 513131, 1026765, 2053034, 4107060, 8213109, 16428221, 32854454, 65712883, 131421763, 262851530, 525695069, 1051406116
COMMENTS
Let S be a sequence of n 2's and 3's with curling number 2 and which has the form XY^2 with Y = 2. S is robust if no proper suffix of S^3 has curling number > 2.
Number of sequences of n 2's and 3's with curling number 2, which have the form XY^2 with Y = 2, and which are not robust.
+10
2
0, 1, 0, 0, 0, 1, 0, 2, 0, 4, 1, 7, 1, 18, 0, 32, 5, 65, 5, 130, 4, 261, 19, 504, 16, 1043, 20, 2028, 81, 4043, 82, 8155, 81
COMMENTS
Let S be a sequence of n 2's and 3's with curling number 2 and which has the form XY^2 with Y = 2. S is robust if no proper suffix of S^3 has curling number > 2.
Number of sequences of n 2's and 3's with curling number 2 and which have the form XY^2 where Y has length 1 (so Y is 2 or 3).
+10
1
0, 2, 2, 4, 8, 16, 32, 64, 126, 252, 504, 1004, 2008, 4016, 8024, 16048, 32096, 64178, 128356, 256712, 513392, 1026784, 2053568, 4107076, 8214152, 16428304, 32856482, 65712964, 131425928, 262851612, 525703224, 1051406448, 2102812394, 4205624788, 8411249576, 16822498162
COMMENTS
This is twice A217832, the latter being the main entry for this sequence.
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