cp's OEIS Frontend

A132403 Triangle read by rows: T(n,k) = nextprime( T(n-1,k) + T(n-1,k-1) ), where nextprime = A151800.

%I A132403 #32 Apr 15 2025 19:17:26
%S A132403 1,2,2,3,5,3,5,11,11,5,7,17,23,17,7,11,29,41,41,29,11,13,41,71,83,71,
%T A132403 41,13,17,59,113,157,157,113,59,17,19,79,173,271,317,271,173,79,19,23,
%U A132403 101,257,449,593,593,449,257,101,23,29,127,359,709,1049,1187,1049,709,359,127,29
%N A132403 Triangle read by rows: T(n,k) = nextprime( T(n-1,k) + T(n-1,k-1) ), where nextprime = A151800.
%C A132403 Each number is the smallest prime > the sum of the 2 numbers above (consider each line padded with 0 on each side).
%e A132403 Triangle begins:
%e A132403   1
%e A132403   2....2
%e A132403   3....5....3
%e A132403   5...11...11....5
%e A132403   7...17...23...17....7
%e A132403   11..29...41...41...29...11
%e A132403   13..41...71...83...71...41...13
%e A132403   17..59..113..157..157..113...59...17
%e A132403   19..79..173..271..317..271..173...79...19
%e A132403   23.101..257..449..593..593..449..257..101...23
%e A132403   29.127..359..709.1049.1187.1049..709..359..127..29
%e A132403   31.157..487.1069.1759.2237.2237.1759.1069..487.157..31
%e A132403   37.191..647.1559.2833.4001.4583.4001.2833.1559.647.191.37
%e A132403   ...
%e A132403 First column is A008578.
%e A132403 Second column is A064337.
%Y A132403 Cf. A008578, A151800, A007318, A064337, A199333, A362034.
%K A132403 easy,nonn,tabl
%O A132403 0,2
%A A132403 _Jonathan Vos Post_, Nov 12 2007