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A186840 as a triangular array

512
26882688
141121990414112
7408814742814742874088
324576107507115374761075071324576
14219526019798154788351547883560197981421952
62295043373102411121141420988893611121141433731024

A186840 as a square array

5122688141127408832457614219526229504
2688199041474281075071601979833731024
14112147428153747615478835111211414
74088107507115478835209888936
3245766019798111211414
142195233731024

A186840 as an upper right triangle

5122688141127408832457614219526229504
2688199041474281075071601979833731024
14112147428153747615478835111211414
74088107507115478835209888936
3245766019798111211414
142195233731024

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Last modified November 13 04:20 EST 2019. Contains 329085 sequences. (Running on oeis4.)