A075643 -id:A075643 - cp's OEIS frontend

A075644 Final terms of groups in A075643.

2, 8, 9, 32, 30, 24, 77, 96, 72, 120, 187, 168, 182, 196, 300, 368, 442, 306, 608, 700, 735, 594, 483, 912, 1350, 962, 1161, 840, 1073, 1080, 1333, 832, 1089, 2312, 1645, 1440, 1369, 2204, 2457, 1880, 2952, 2016, 2537, 3036, 3375, 2438, 3572, 2928, 2303

Offset: 1

Amarnath Murthy, Sep 30 2002

nonn

a(n) is a multiple of n.

Cf. A075643, A075645, A075646, A075647.

More terms from David Wasserman, Jan 22 2005

A075645 Sums of groups in A075643.

Original entry on oeis.org

2, 9, 16, 55, 78, 112, 232, 342, 420, 605, 852, 1053, 1330, 1650, 2144, 2601, 3168, 3534, 4420, 5229, 5984, 6670, 7440, 8950, 10478, 11232, 12712, 13775, 15510, 17236, 19200, 20526, 22780, 26040, 27756, 29896, 32452, 35958, 39120, 41533, 45570

Offset: 1

Amarnath Murthy, Sep 30 2002

nonn

a(n) is a multiple of (n+1).

Cf. A075643, A075644, A075646, A075647.

More terms from David Wasserman, Jan 22 2005

A075646 (Sum of n-th group in A075643)/(n+1).

Original entry on oeis.org

1, 3, 4, 11, 13, 16, 29, 38, 42, 55, 71, 81, 95, 110, 134, 153, 176, 186, 221, 249, 272, 290, 310, 358, 403, 416, 454, 475, 517, 556, 600, 622, 670, 744, 771, 808, 854, 922, 978, 1013, 1085, 1120, 1184, 1252, 1314, 1354, 1441, 1489, 1536, 1633, 1713, 1753

Offset: 1

Amarnath Murthy, Sep 30 2002

nonn

Cf. A075643, A075644, A075645, A075647.

More terms from David Wasserman, Jan 22 2005

A075647 List of groups in A075643.

Original entry on oeis.org

2, 1, 8, 3, 4, 9, 5, 6, 12, 32, 7, 10, 15, 16, 30, 11, 14, 18, 20, 25, 24, 13, 22, 21, 28, 35, 36, 77, 17, 26, 27, 40, 45, 42, 49, 96, 19, 34, 33, 44, 50, 48, 56, 64, 72, 23, 38, 39, 52, 55, 54, 63, 80, 81, 120, 29, 46, 51, 60, 65, 66, 70, 88, 90, 100, 187, 31, 58, 57, 68, 75, 78

Offset: 1

Amarnath Murthy, Sep 30 2002

			Triangle begins:
  2;
  1,8;
  3,4,9;
  5,6,12,32;
  7,10,15,16,30;
  11,14,18,20,25,24;
  ...

Cf. A075643, A075644, A075645, A075646.

used = vector(50000); A = vector(70); A[1] = 2; B = A; C = A; D = A; D[1] = 1; print(2); used[2] = 1; x = vector(70, i, i); for (n = 2, 70, s = 0; for (j = 1, n - 1, while (used[x[j]], x[j] += j); print1(x[j], " "); used[x[j]] = 1; s += x[j]; x[j] += j); while (used[x[n]], x[n] += n); i = x[n] + n*((s + x[n])%(n + 1)); while(used[i], i += n*(n + 1)); print(i); used[i] = 1; s += i; A[n] = x[1] - 1; B[n] = i; C[n] = s; D[n] = s/(n + 1)); \\ David Wasserman, Jan 22 2005

More terms from David Wasserman, Jan 22 2005

Leading term 2 was omitted; restored May 16 2007

A076074 Initial members of groups in A076077.

Original entry on oeis.org

2, 1, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277

Offset: 1

Amarnath Murthy, Oct 05 2002

nonn

Is this the same sequence as A075643? - Andrew S. Plewe, Apr 30 2007

Cf. A076075, A076076, A076077.

Cf. A064555. [From R. J. Mathar, Dec 15 2008]

More terms from David Wasserman, Mar 24 2005

cp's OEIS Frontend

A075644 Final terms of groups in A075643.

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A075645 Sums of groups in A075643.

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A075646 (Sum of n-th group in A075643)/(n+1).

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A075647 List of groups in A075643.

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A076074 Initial members of groups in A076077.

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