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A049638 a(n)=T(n,4), array T as in A049627. 0
2, 7, 9, 12, 14, 18, 19, 23, 25, 28, 30, 34, 35, 39, 41, 44, 46, 50, 51, 55, 57, 60, 62, 66, 67, 71, 73, 76, 78, 82, 83, 87, 89, 92, 94, 98, 99, 103 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..37.

FORMULA

Conjecture: G.f. 2 -x*(-7-9*x-5*x^2+2*x^3+3*x^4) / ( (1+x)*(1+x+x^2)*(x-1)^2 ). - R. J. Mathar, Oct 26 2015

CROSSREFS

Sequence in context: A082371 A090348 A163405 * A190490 A059649 A190500

Adjacent sequences:  A049635 A049636 A049637 * A049639 A049640 A049641

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified June 12 14:15 EDT 2021. Contains 344956 sequences. (Running on oeis4.)