A071761 Dealing cards in a game of solitaire.

0, 1, 2, 21, 31, 32, 321, 421, 431, 432, 4321, 5321, 5421, 5431, 5432, 54321, 64321, 65321, 65421, 65431, 65432, 654321, 754321, 764321, 765321, 765421, 765431, 765432, 7654321, 8654321, 8754321, 8764321, 8765321, 8765421, 8765431, 8765432

Offset: 0

Author

Allan C. Wechsler, Jun 07 2002

Keywords

• nonn
• easy
• nice

Comments

An infinite square array,

a11 a12 a13 ...

a21 a22 a23 ...

a31 a32 a33 ...

a41 a42 a43 ...

...............

is built up by antidiagonals: a11 a21 a12 a31 a22 a13 ... The terms of the sequence record the number of entries in each column at each step, e.g. when dealing cards in a game of solitaire.

Crossrefs

The parity of this sequence gives A023532.

Cf. A071762, A074909.

Extensions

Entry revised by Jeremy Gardiner, Dec 08 2004