A215870 - OEIS

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A215870 as a triangular array

1

1 1

1 1 1

1 1 1 1

1 2 1 1 1

1 2 2 1 1 1

1 5 4 4 1 1 1

1 5 12 10 4 1 1 1

1 14 29 78 20 8 1 1 1

1 14 110 262 189 50 8 1 1 1

1 42 290 3001 1642 1233 100 16 1 1 1

1 42 1274 11694 26451 15485 2988 250 16 1 1 1

1 132

A215870 as a square array

1 1 1 1 1 1 1 1 1 1 1 1 1

1 1 1 2 2 5 5 14 14 42 42 132

1 1 1 2 4 12 29 110 290 1274

1 1 1 4 10 78 262 3001 11694

1 1 1 4 20 189 1642 26451

1 1 1 8 50 1233 15485

1 1 1 8 100 2988

1 1 1 16 250

1 1 1 16

1 1 1

1 1

1

A215870 as an upper right triangle

1 1 1 1 1 1 1 1 1 1 1 1 1

1 1 1 2 2 5 5 14 14 42 42 132

1 1 1 2 4 12 29 110 290 1274

1 1 1 4 10 78 262 3001 11694

1 1 1 4 20 189 1642 26451

1 1 1 8 50 1233 15485

1 1 1 8 100 2988

1 1 1 16 250

1 1 1 16

1 1 1

1 1

1

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Last modified June 6 10:57 EDT 2024. Contains 373127 sequences. (Running on oeis4.)