A350395 -id:A350395 - cp's OEIS frontend

A350393 Smallest degree of x with the largest coefficient in Product_{k=1..n} (1 + x^k).

0, 0, 0, 3, 3, 5, 9, 12, 18, 21, 27, 33, 39, 45, 52, 60, 68, 76, 85, 95, 105, 115, 126, 138, 150, 162, 175, 189, 203, 217, 232, 248, 264, 280, 297, 315, 333, 351, 370, 390, 410, 430, 451, 473, 495, 517, 540, 564, 588, 612, 637, 663, 689, 715, 742, 770, 798, 826, 855, 885, 915, 945, 976

Offset: 0

Max Alekseyev, Dec 28 2021

nonn

Apparently, a(n) = A011848(n+1) for n >= 10. - Hugo Pfoertner, Dec 30 2021

Cf. A025591 (largest coefficient), A350394 (largest degree of x), A350395, A350396.

Cf. A011848.

{ A350393(n) = my(v,t,x='x); v = Vecrev(prod(k=1,n,1+x^k)); vecmax(v,&t); t-1; }

A350394 Largest degree of x with the largest coefficient in Product_{k=1..n} (1 + x^k).

Original entry on oeis.org

0, 1, 3, 3, 7, 10, 12, 16, 18, 24, 28, 33, 39, 46, 53, 60, 68, 77, 86, 95, 105, 116, 127, 138, 150, 163, 176, 189, 203, 218, 233, 248, 264, 281, 298, 315, 333, 352, 371, 390, 410, 431, 452, 473, 495, 518, 541, 564, 588, 613, 638, 663, 689, 716, 743, 770, 798, 827, 856, 885, 915, 946, 977

Offset: 0

Max Alekseyev, Dec 28 2021

nonn

Apparently, a(n) = A054925(n+1) for n >= 10. - Hugo Pfoertner, Dec 30 2021

Cf. A025591 (largest coefficient), A350393 (smallest degree of x), A350395, A350396.

Cf. A054925.

{ A350394(n) = my(v,t,x='x); v = Vec(prod(k=1,n,1+x^k)); vecmax(v,&t); #v-t; }

A350396 Numbers m such that there are two or more terms with the largest coefficient in Product_{k=1..m} (1 + x^k).

Original entry on oeis.org

1, 2, 4, 5, 6, 7, 9, 10, 13, 14, 17, 18, 21, 22, 25, 26, 29, 30, 33, 34, 37, 38, 41, 42, 45, 46, 49, 50, 53, 54, 57, 58, 61, 62, 65, 66, 69, 70, 73, 74, 77, 78, 81, 82, 85, 86, 89, 90, 93, 94, 97, 98, 101, 102, 105, 106, 109, 110, 113, 114, 117, 118, 121, 122, 125, 126, 129, 130, 133, 134, 137, 138, 141, 142, 145, 146, 149, 150, 153, 154, 157, 158, 161, 162, 165, 166, 169, 170, 173, 174, 177, 178

Offset: 1

Max Alekseyev, Dec 28 2021

nonn

Numbers m such that A350393(m) < A350394(m).

Apparently, a(n) = A042963(n-2) for n >= 7. - Hugo Pfoertner, Dec 30 2021

Complement of A350395.
Cf. A025591 (largest coefficient), A350393, A350394.
Cf. A042963.

cp's OEIS Frontend

A350393 Smallest degree of x with the largest coefficient in Product_{k=1..n} (1 + x^k).

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A350394 Largest degree of x with the largest coefficient in Product_{k=1..n} (1 + x^k).

Views

Author

Keywords

Comments

Crossrefs

Programs

PARI

A350396 Numbers m such that there are two or more terms with the largest coefficient in Product_{k=1..m} (1 + x^k).

Views

Author

Keywords

Comments

Crossrefs