This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A276587 #16 Apr 12 2017 23:25:16 %S A276587 1,3,2,11,8,6,55,44,36,30,375,320,276,240,210,3731,3356,3036,2760, %T A276587 2520,2310,47743,44012,40656,37620,34860,32340,30030,777771,730028, %U A276587 686016,645360,607740,572880,540540,510510,14770535,13992764,13262736,12576720,11931360,11323620,10750740,10210200,9699690 %N A276587 Transpose of square array A276586. %C A276587 Rows give the successive first differences of A136104. %H A276587 <a href="/index/Pri#primorial_numbers">Index entries for sequences related to primorial numbers</a> %e A276587 The top left corner of the array: %e A276587 1, 3, 11, 55, 375, 3731 %e A276587 2, 8, 44, 320, 3356, 44012 %e A276587 6, 36, 276, 3036, 40656, 686016 %e A276587 30, 240, 2760, 37620, 645360, 12576720 %e A276587 210, 2520, 34860, 607740, 11931360, 277008480 %e A276587 2310, 32340, 572880, 11323620, 265077120, 7687412040 %e A276587 30030, 540540, 10750740, 253753500, 7422334920, 235239464460 %o A276587 (Scheme) (define (A276587 n) (A276586bi (A025581 n) (A002262 n))) ;; Code for A276586bi given in A276586. %o A276587 (PARI) P(n)=prod(i=1, n, prime(i)); %o A276587 T(n, k) = sum(j=0, n, binomial(n, j)*P(k + j)); %o A276587 for(n=0, 10, for(k=0, n, print1(T(n - k, k),", ");); print();) \\ _Indranil Ghosh_, Apr 11 2017 %Y A276587 Topmost row: A136104. For other rows and columns, see the information given in transpose A276586. %Y A276587 Cf. also A276589. %K A276587 nonn,tabl %O A276587 0,2 %A A276587 _Antti Karttunen_, Sep 18 2016