A276609 Transpose of square array A276610.

1, 2, 5, 2, 10, 9, 4, 12, 20, 13, 2, 24, 24, 28, 17, 4, 18, 44, 36, 38, 21, 6, 28, 30, 66, 48, 46, 25, 2, 44, 54, 46, 90, 58, 56, 29, 4, 22, 84, 84, 60, 114, 68, 64, 33, 8, 38, 40, 122, 104, 74, 136, 82, 74, 37, 4, 48, 60, 54, 156, 136, 86, 152, 92, 82, 41, 2, 40, 116, 94, 76, 194, 162, 106, 174, 102, 92, 45

Offset

1,2

Comments

The array is read by descending antidiagonals as A(1,1), A(1,2), A(2,1), A(1,3), A(2,2), A(3,1), ...

See A276610.

Links

Antti Karttunen, Table of n, a(n) for n = 1..5050; the first 100 antidiagonals of array

Index entries for sequences generated by sieves

Example

The top left 16 x 15 corner of the array:
   1,   2,   2,   4,   2,   4,   6,   2,   4,   8,   4,   2,   4,   6,   8
   5,  10,  12,  24,  18,  28,  44,  22,  38,  48,  40,  24,  38,  58,  60
   9,  20,  24,  44,  30,  54,  84,  40,  60, 116,  76,  38,  70, 102, 134
  13,  28,  36,  66,  46,  84, 122,  54,  94, 162, 104,  52, 116, 142, 204
  17,  38,  48,  90,  60, 104, 156,  76, 120, 236, 136,  62, 148, 194, 256
  21,  46,  58, 114,  74, 136, 194,  90, 150, 288, 166, 108, 164, 234, 322
  25,  56,  68, 136,  86, 162, 234, 102, 190, 336, 194, 124, 210, 290, 390
  29,  64,  82, 152, 106, 180, 282, 122, 210, 406, 212, 148, 240, 348, 446
  33,  74,  92, 174, 120, 210, 316, 144, 240, 446, 270, 150, 270, 408, 498
  37,  82, 102, 202, 128, 238, 348, 164, 270, 510, 298, 182, 300, 436, 578
  41,  92, 114, 222, 150, 260, 388, 180, 302, 576, 318, 198, 354, 460, 642
  45, 100, 126, 244, 162, 288, 428, 198, 330, 622, 356, 222, 388, 524, 684
  49, 110, 138, 264, 174, 318, 464, 210, 364, 680, 382, 242, 414, 576, 774
  53, 118, 148, 284, 192, 346, 504, 230, 390, 738, 412, 260, 448, 630, 828
  57, 128, 158, 310, 204, 366, 548, 240, 430, 786, 462, 272, 474, 696, 870
  61, 136, 172, 330, 216, 396, 584, 264, 456, 844, 492, 300, 504, 726, 948

Prog

(Scheme) (define (A276609 n) (A276610bi (A004736 n) (A002260 n))) ;; Code for A276610bi given in A276610.

Crossrefs

Transpose: A276610.

Cf. also A257514.

Sequence in context: A210697 A085020 A358309 * A292591 A240760 A207635

Adjacent sequences: A276606 A276607 A276608 * A276610 A276611 A276612

Keyword

nonn,tabl

Author

Antti Karttunen, Sep 13 2016

Status

approved