A137439 Sequence is concatenation of S_1, S_2, S_3, ..., where S_k = [45k, 45k-1, 45k-2, ..., 45k-9k].

45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 90, 89, 88, 87, 86, 85, 84, 83, 82, 81, 80, 79, 78, 77, 76, 75, 74, 73, 72, 135, 134, 133, 132, 131, 130, 129, 128, 127, 126, 125, 124, 123, 122, 121, 120, 119, 118, 117, 116, 115, 114, 113, 112, 111, 110, 109, 108, 180, 179, 178, 177

Offset

1,1

Comments

S_1 = [ 45,44,43,42,41,40,39,38,37,36 ],

S_2 = [ 90,89,88,87,86,87,..,74,73,72 ], ...

Links

J. Mulder, Table of n, a(n) for n = 1..45550

Mathematica

Array[Range[45#, 36#, -1]&, 5] (* Paolo Xausa, Jan 03 2024 *)

Crossrefs

Sequence in context: A085518 A087083 A216407 * A199356 A199523 A119415

Adjacent sequences: A137436 A137437 A137438 * A137440 A137441 A137442

Keyword

easy,nonn,less

Author

Odimar Fabeny, Apr 17 2008

Extensions

Edited by N. J. A. Sloane, Apr 21 2008

Status

approved