# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a128579 Showing 1-1 of 1 %I A128579 #6 Mar 19 2016 09:03:43 %S A128579 1,2,7,44,419,5254,80687,1458524,30259147,707813762,18421139495, %T A128579 527856303160,16513700403347,560082210938174,20471657576850655, %U A128579 802275966701866964,33560323690860843995,1492638035099491033402 %N A128579 Antidiagonal sums of table A128570. %H A128579 Vaclav Kotesovec, Table of n, a(n) for n = 0..200 %F A128579 a(n) ~ exp(1/2) * A128318(n). - _Vaclav Kotesovec_, Mar 19 2016 %o A128579 (PARI) {a(n)=local(F=1+x,A=0);for(k=0,n, for(j=0,k,F=1+(n+1-j)*x*F^2 +x*O(x^k));A+=polcoeff(F,k));A} %Y A128579 Cf. A128570 (triangle), rows: A128318, A128571, A128572, A128573, A128574, A128575, A128576; A128577 (square of row 0), A128578 (main diagonal). %K A128579 nonn %O A128579 0,2 %A A128579 _Paul D. Hanna_, Mar 11 2007 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE