A180316 Concatenation of n and A008954(n).

0, 11, 23, 36, 40, 55, 61, 78, 86, 95, 105, 116, 128, 131, 145, 150, 166, 173, 181, 190, 200, 211, 223, 236, 240, 255, 261, 278, 286, 295, 305, 316, 328, 331, 345, 350, 366, 373, 381, 390, 400, 411, 423, 436, 440, 455, 461, 478, 486, 495, 505, 516, 528, 531, 545, 550, 566

Offset

0,2

Links

Harvey P. Dale, Table of n, a(n) for n = 0..1000

Formula

From Chai Wah Wu, Jan 09 2020: (Start)

a(n) = a(n-1) + a(n-5) - a(n-6) - a(n-10) + a(n-11) + a(n-15) - a(n-16) for n > 15.

G.f.: x*(10*x^14 + 9*x^13 + 8*x^12 + 7*x^11 + 16*x^10 - 5*x^9 + 5*x^8 - 5*x^7 + 5*x^6 - 5*x^5 + 15*x^4 + 4*x^3 + 13*x^2 + 12*x + 11)/(x^16 - x^15 - x^11 + x^10 + x^6 - x^5 - x + 1). (End)

Mathematica

Module[{nn=60}, 10#[[1]]+Mod[#[[2]], 10]&/@Thread[{Range[0, nn], Accumulate[ Range[ 0, nn]]}]] (* Harvey P. Dale, Oct 21 2016 *)

Crossrefs

Cf. A008954

Sequence in context: A136771 A017653 A369463 * A139793 A101859 A079664

Adjacent sequences: A180313 A180314 A180315 * A180317 A180318 A180319

Keyword

easy,base,nonn

Author

Odimar Fabeny, Aug 27 2010

Extensions

keyword:base added and sequence extended - R. J. Mathar, Sep 23 2010

Status

approved