|
|
A163983
|
|
Antidiagonal sums of A163280.
|
|
1
|
|
|
1, 6, 18, 41, 77, 133, 210, 310, 445, 602, 810, 1049, 1347, 1693, 2068, 2545, 3028, 3613, 4256, 4987, 5817, 6711, 7640, 8783, 9962, 11157, 12454, 13992, 15615, 17310, 19194, 21113, 23108, 25325, 27852, 30412, 33158, 36019, 38920, 41877, 45230, 48686, 52528, 56593, 60399, 64406
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
LINKS
|
|
|
PROG
|
(PARI) lista(nn) = my(v = apply(f, [1..nn^2]), cols = vector(nn, i, select(x->(x==i), v, 1))); vector(nn, i, sum(j=1, i, cols[j][i-j+1])); \\ Michel Marcus, Jan 23 2023
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|