A100250 Positions where values change in A100144.

1, 2, 4, 8, 14, 24, 38, 56, 78, 106, 140, 180, 226, 278, 336, 404, 482, 570, 668, 776, 894, 1022, 1160, 1308, 1466, 1638, 1824, 2024, 2238, 2466, 2708, 2964, 3234, 3518, 3816, 4128, 4454, 4794, 5148, 5520, 5910, 6318, 6744, 7188, 7650, 8130, 8628, 9144, 9678

Offset

1,2

Comments

Old name was "Indices of beginning terms of arithmetic progressions in A100143".

These terms are 1, A100143(1)+1, A100143(1) + A100143(2) + 1, ...; i.e., the term 1 followed by 1 + partial sums of A100143.

Second differences are in A100144. [Ralf Stephan, Aug 28 2013]

Links

Table of n, a(n) for n=1..49.

Crossrefs

Cf. A100143.

Sequence in context: A049701 A005598 A290845 * A053800 A262968 A261203

Adjacent sequences: A100247 A100248 A100249 * A100251 A100252 A100253

Keyword

nonn

Author

Rick L. Shepherd, Nov 09 2004

Extensions

Definition simplified by Ralf Stephan, Aug 28 2013

Status

approved