cp's OEIS Frontend

A306192 a(n) = (n - 1)*prime(n + 1).

%I A306192 #16 Sep 08 2022 08:46:21
%S A306192 0,5,14,33,52,85,114,161,232,279,370,451,516,611,742,885,976,1139,
%T A306192 1278,1387,1580,1743,1958,2231,2424,2575,2782,2943,3164,3683,3930,
%U A306192 4247,4448,4917,5134,5495,5868,6179,6574,6981,7240,7831,8106,8471,8756,9495,10258
%N A306192 a(n) = (n - 1)*prime(n + 1).
%C A306192 For n > 1, a(n) is the subdiagonal sum of the matrix M(n) whose determinant is A318173(n).
%H A306192 Stefano Spezia, <a href="/A306192/b306192.txt">Table of n, a(n) for n = 1..10000</a>
%F A306192 a(n) = A033286(n + 1) - 2*A000040(n + 1).
%F A306192 a(n) = (n - 1)/(n + 1)*A033286(n + 1).
%p A306192 a := n -> (n-1)*ithprime(n+1): seq(a(n), n = 1 .. 100);
%t A306192 a[n_]:=(n-1)*Prime[n+1]; Array[a,100]
%o A306192 (Magma) [(n-1)*NthPrime(n+1): n in [1..100]];
%o A306192 (PARI) a(n) = (n-1)*prime(n+1);
%o A306192 (Python)
%o A306192 from sympy import prime
%o A306192 [(n-1)*prime(n+1) for n in range(1,100)]
%Y A306192 Cf. A000040, A033286, A318173.
%K A306192 nonn,easy
%O A306192 1,2
%A A306192 _Stefano Spezia_, Jan 28 2019