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A277320 Square array A(r,c) = A048720(A065621(r), c), read by descending antidiagonals as A(1,1), A(1,2), A(2,1), A(1,3), A(2,2), A(3,1), etc. 10
1, 2, 2, 3, 4, 7, 4, 6, 14, 4, 5, 8, 9, 8, 13, 6, 10, 28, 12, 26, 14, 7, 12, 27, 16, 23, 28, 11, 8, 14, 18, 20, 52, 18, 22, 8, 9, 16, 21, 24, 57, 56, 29, 16, 25, 10, 18, 56, 28, 46, 54, 44, 24, 50, 26, 11, 20, 63, 32, 35, 36, 39, 32, 43, 52, 31, 12, 22, 54, 36, 104, 42, 58, 40, 100, 46, 62, 28, 13, 24, 49, 40, 101, 112, 49, 48, 125, 104, 33, 56, 21 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
FORMULA
A(r,c) = A048720(A065621(r), c).
EXAMPLE
The top left corner of the array:
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24
7, 14, 9, 28, 27, 18, 21, 56, 63, 54, 49, 36
4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48
13, 26, 23, 52, 57, 46, 35, 104, 101, 114, 127, 92
14, 28, 18, 56, 54, 36, 42, 112, 126, 108, 98, 72
11, 22, 29, 44, 39, 58, 49, 88, 83, 78, 69, 116
8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96
25, 50, 43, 100, 125, 86, 79, 200, 209, 250, 227, 172
26, 52, 46, 104, 114, 92, 70, 208, 202, 228, 254, 184
31, 62, 33, 124, 99, 66, 93, 248, 231, 198, 217, 132
28, 56, 36, 112, 108, 72, 84, 224, 252, 216, 196, 144
21, 42, 63, 84, 65, 126, 107, 168, 189, 130, 151, 252
22, 44, 58, 88, 78, 116, 98, 176, 166, 156, 138, 232
19, 38, 53, 76, 95, 106, 121, 152, 139, 190, 173, 212
16, 32, 48, 64, 80, 96, 112, 128, 144, 160, 176, 192
49, 98, 83, 196, 245, 166, 151, 392, 441, 490, 475, 332
50, 100, 86, 200, 250, 172, 158, 400, 418, 500, 454, 344
55, 110, 89, 220, 235, 178, 133, 440, 399, 470, 481, 356
PROG
(Scheme)
(define (A277320 n) (A277320bi (A002260 n) (A004736 n)))
(define (A277320bi row col) (A048720bi (A065621 row) col))
CROSSREFS
Transpose: A277199.
Main diagonal: A277699.
Row 1: A000027, Row 3: A048727.
Column 1: A065621, Column 3: A277823, Column 5: A277825.
Cf. A277820 (array obtained by selecting only the columns with an index A001317(k), k=0..).
Sequence in context: A319638 A179637 A054241 * A343399 A332106 A088633
KEYWORD
nonn,base,tabl
AUTHOR
Antti Karttunen, Nov 01 2016
STATUS
approved

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Last modified May 29 05:33 EDT 2024. Contains 372921 sequences. (Running on oeis4.)