A163242 Row sums of A163233 and A163235.
0, 3, 18, 30, 90, 153, 204, 252, 492, 735, 990, 1242, 1446, 1653, 1848, 2040, 3000, 3963, 4938, 5910, 6930, 7953, 8964, 9972, 10788, 11607, 12438, 13266, 14046, 14829, 15600, 16368, 20208, 24051, 27906, 31758, 35658, 39561, 43452, 47340
Offset: 0
Keywords
Links
- Michael De Vlieger, Table of n, a(n) for n = 0..1000
- Hsien-Kuei Hwang, Svante Janson, and Tsung-Hsi Tsai, Identities and periodic oscillations of divide-and-conquer recurrences splitting at half, arXiv:2210.10968 [cs.DS], 2022, pp. 42-43.
Crossrefs
a(n) = 3*A163478(n).
Programs
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Mathematica
Map[Total, Table[Function[k, FromDigits[#, 2] &@ Apply[Function[{a, b}, Riffle @@ Map[PadLeft[#, Max[Length /@ {a, b}]] &, {a, b}]], Map[IntegerDigits[#, 2] &@ BitXor[#, Floor[#/2]] &, {k, j}] ] ][i - j], {i, 0, 39}, {j, i, 0, -1}]] (* Michael De Vlieger, Nov 01 2022 *)
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