OFFSET
1,1
LINKS
FORMULA
For n >= 1, A276150(a(n)) = 2.
EXAMPLE
Triangle begins as:
4;
8, 12;
32, 36, 60;
212, 216, 240, 420;
2312, 2316, 2340, 2520, 4620;
30032, 30036, 30060, 30240, 32340, 60060;
510512, 510516, 510540, 510720, 512820, 540540, 1021020;
9699692, 9699696, 9699720, 9699900, 9702000, 9729720, 10210200, 19399380;
MATHEMATICA
nn = 20; MapIndexed[Set[P[First[#2] - 1], #1] &, FoldList[Times, 1, Prime@ Range[nn + 1]]]; Table[(P[n] + P[k]), {n, nn}, {k, n}] (* Michael De Vlieger, Mar 08 2024 *)
PROG
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Antti Karttunen, Mar 07 2024
STATUS
approved