

A180650


Irregular triangle in which row n consists of the smaller of pairs of amicable numbers of the form 2^n pq, with p and q odd primes.


3



2620, 5020, 10744, 66928, 171856, 176272, 437456, 503056, 1392368, 2802416, 2082464, 15002464, 17908064, 7677248, 56055872, 1237888448, 1750776704, 16873473664, 749380864, 902335744, 4377991936, 74006870272, 243815958784
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

2,1


COMMENTS

The length of row n is A180335(n). The first number in row n is A180330(n).


LINKS



CROSSREFS



KEYWORD

hard,tabf,nonn


AUTHOR



STATUS

approved



