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Binomial(n,4) - A290447(n).
3

%I #10 Aug 09 2017 07:45:22

%S 0,0,0,0,0,0,0,0,2,10,30,50,88,126,176,256,374,492,651,810,1013,1285,

%T 1605,1925,2327,2794,3315,3921,4627,5333,6215,7097,8093,9210,10411,

%U 11763,13392,15021,16748,18649,20833,23017,25480,27943,30634,33656,36806,39956,43478,47215,51266,55565,60168

%N Binomial(n,4) - A290447(n).

%C Binomial(n,4) is an upper bound on A290447. No formula or recurrence is known for the latter, but perhaps the differences will turn out to be simpler to analyze.

%H N. J. A. Sloane, <a href="/A290461/b290461.txt">Table of n, a(n) for n = 1..500</a> [Based on David Applegate's b-file for A290447]

%Y Cf. A000332, A290447.

%K nonn

%O 1,9

%A _N. J. A. Sloane_, Aug 07 2017